你如何将sockaddr结构转换为sockaddr_in – C ++networking套接字ubuntu UDP

我正在尝试获取客户端地址，但我不确定如何将sockaddr结构投射到sockaddr_in？

struct sockaddr_in cliAddr,servAddr; n = recvfrom(sd,msg,MAX_MSG,(struct sockaddr *) cliAddr,sizeof(cliAddr)); //i tried this but it does not work struct sockaddr cliSockAddr = (struct sockaddr *) cliAddr; char *ip = inet_ntoa(cliSockAddr.sin_addr);

提前致谢！